TopoFusion is GPS Mapping software for Windows. It downloads maps (Topo,
Aerial Photo and Satellite) automatically from several public map servers (see:
available imagery).

Please download and use the free version. It is
fully functional except that 1/5th of the map tiles are obscured with the word
DEMO and there is a limit of three files open at a time. It is not time
limited, so you are free to keep and use it as long as you like. If you like
what we are trying to accomplish with our software and would like to support
our efforts, please purchase a copy to remove the
DEMO tiles.

Our aim is to continually nudge the state of the art in mapping software forward.
A few examples:

Efficient, versatile map display engine. TopoFusion runs the way a modern
mapping application should--fast and smooth.